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A. Kowalczuk-Bleja, B. Sierocka, B. Trzebicka, A. Dworak

Star-shaped polymers with branched poly[p-(halogenmethyl)styrene] cores

Polimery 2005, No 7-8, 555




Summary

Methods of preparation of core/shell type star-shaped polymers have been presented. The core was either poly[p-(chloromethyl)styrene] [poliPCMS, Formula (I)] or poly[p-(iodomethyl)styrene] [poliPJMS, Formula (II)]. PoliPCMS was synthesized by atom transfer radical polymerization (ATRP) while poliPJMS has been obtained first time via radical polymerization with degenerative chain transfer (Scheme A). PoliPCMS has been used as a core to obtain amphiphilic star-shaped polymers with arms made of poly(ethylene oxide) (PEOX) of different molar mass [equation (2)], in a Williamson reaction by the “arm-first” method. PoliPJMS core has been used as a precursor in “core-first” method to obtain well defined star-shaped polymers with the arms made of poly(t-butyl acrylate) (PAKTB), polystyrene [PS, equation (4)] or copolymers PS-block-PAKTB [equation (5)] using the iodine mediated degenerative chain transfer polymerization. Star-shaped polymers have been characterized using gel permeation chromatography/multi-angle laser light scattering (GPC-MALLS) (Fig. 1 and 2, Tables 1-3) and 1H NMR and 13C NMR spectroscopy.


Key words: atom transfer radical polymerization, radical polymerization with degenerative chain transfer, star-shaped polymers, core/shell, poly[p-(halogenmethyl)styrene]


A. Kowalczuk-Bleja, B. Sierocka, B. Trzebicka, A. Dworak (1.41 MB)
Star-shaped polymers with branched poly[p-(halogenmethyl)styrene] cores (part I)
A. Kowalczuk-Bleja, B. Sierocka, B. Trzebicka, A. Dworak (839.9 KB)
Star-shaped polymers with branched poly[p-(halogenmethyl)styrene] cores (part II)